Shoe-pressing machine



Jan. 8, 1929. 1,698,041

' E. E. WINKLEY l SHOE PRESSING MACHINE Filed Dec. 14, 1927 zsheets-sheet 2 Patented Jan. 8, 1929.

ennemis n. WiNKLnir, or LYNN, Masseure-serais, AssiGNoN'ro niirrnnfsiionM- i .cnINni-LY CORPORATION, or ramassent, Nniv JERSEY, a -coaiaona'rionor` NEW JERSEY.

SHOE-PRESSG MACINE.

Application filed December l, 1927. Serial No. 240,041.

ent No. 1,667,761, granted on May l, 1928,

upon an application of E. E. VVinlley and H. A. Davenport, and invarious Letters Patent therein referred to, although it is to beunderstood that in its more general aspects lthe invention is not thuslimited in its applicability.

Machines of the above-'mentioned type comprise in their organization aspringv for pressing the leveling` tool yieldingly on the shoeandautomatic means for controlling the pressure applied to the shoeVthrough theA spring in the course of the leveling operation. ln suchcontrol an object is to provide for adequate pressure on yboth theforepart and the shank rportions of the shoe. bottom, and

also under some conditions to relieve the pressure on one or more`portions of the shoe bottom. In the use of the machine, for eX-ami'ile, on shoes that have high-arched Shanks, it is desirable torelieve the pressure in the vicinity of the ball-line, so that the toolWill not fall too abruptly from the ball into the shank and Will notmeet too much resistance inreturning from the shank to the forepart.Moreover, in operating on shoes of a style characterized by a pronouncedline or ridge across the sole at the ball, of the shoe, it is desirablethus to relieve the pressure in order to prevent the tool fromobliterating such a line or ridge. It is likewise desirable to relievethe pressure at 'the beginning and at the end of the leveling operationin'orderto prevent damage to the toe end of the sole, as fully explainedin the above-mentioned Letters Patent No. 1,667,761.

An object of the present invention is to provide simple and convenientlyoperable means for-controlling the pressure of a leveling tool on a shoein such manner asto relieve the pressure effectively Where desired andyet to apply the amount of pressure required for'the best results inoperating on other portions of the shoe. For the purposes in view theconstruction shown comprises means'whereby tlietool 'support or carrierlmay be released from the vforce yofthepressure spring to effect therelief of pressure on the shoe, Whilefyet maintaining the spring under apredetermineddegree of stress 'tobe rendered immediately effective `on'thegsh'oe 'as soon asl the pressure is again applied.

Preferably, as shown, the machine also includes in its organization`means such as disclosed in the above-mentioned Letters Patent Vforsupporting the weight of the tool and its carrier., and it may be alsofor lifting these parts, when the reliefof ,the pressure takes place,the arrangement accordingly being suoli that the tool may be lifted,for'eXample inpassing from the shankup over lthe ballline,` Withoutopposition'from the pressure spring, notwithstanding .the factl that thespring is still held under stress. The invention thus provides novelmeanswhereby a complete'release of the pressure on-the shoe may vbeeffected vvhere 'required,l and yetv whereby the shoe may be immediatelysubjected again to adequate pressure as soon as' the pressure. is againapplied. The invention still further Vprovides a novel organization ofmeans for varying the minimum stress ofthe pressure spring to determinethe degree of pressure applied to the shoe, and-also-for effecting suchan adj ustment as to preveiitthe release of the toolcarrier `from theforce of the spring in the manner above set forthin operating on shoesof such a style as not to require a coinpletegrelease of the pressure atthe ball-line. y i e j InV accordance With a further feature of theinventionthere is provided anovel organization of means for determiningthe time or times in the cycle of operations ofthe machine when therelief of the ,pressure of the tool on the shoe takes place, Whether ornot there be a complete release of the pressure as hereinabovedescribed. ln different styles of shoes there is frequently a. variationin the relation between the length of the 'forepart andthe length Vofthe shanlr'in shoes'of thel sainesize. y In view of this andotherconditions, the machine herein shown includes in its organizationmeans .for suitably `varying the time inthe cycle of operations when therelief ofthe pressure takes place in eachV traverse of the leveling toolover the balli portion of the shoe, so that the relief of the pressure vwill occur at precisely the time best suited to the particular style ofshoe. As herein illustrated, the relief of the pressure each t-ime atthe ball-line is controlled by means which is adjustablezto vary thetime when the pressure is relieved and which is associated with a seriesof cams operating at fixed times in the cycle to apply the pressuresubstantially as heretofore. It will accordingly be evident that by theconstruction herein shown there may be effected a relativevariationbetween the time of. application and the time of relief of thepressure so that the duration of the pressure relief will likewise bevaried, as isl desirable in accommodating the machine to,

different conditions that may be met with in operatinfr upon shoes ofdifferent shapes.

The above and other features of the invention, including various noveldetails of construction and combinations of parts, will .now be moreparticularly described by reference to the accompanying drawings and`pointed out in the claims.

In the drawings, v Y

:Fig: 1 is a view in side elevation, with. parts in section, showing amachine ofthe type disclosed in the prior Letters Patent herein- `beforementioned, with the present invention embodied therein; p Y l Fig. 2 isa perspective view from the righthand side of Fig.` 1, showing a portionof the mechanism for variably timing the relief of the pressure of theleveling tool on the shoe; Fig. 3 shows more in detail the cam mecha.-nism illustrated inv Fig. 2, as viewed from the left-hand side of thatfigure;

Fig. 4 is a view in left-hand 'end elevation of the mechanism shown inFig. 3;

Fig. 5 is a detail view in side elevation, showing a portion of themechanism for variably timing the pressure relief, with the mentalities,since it will be understood that, except as will appear hereinafter,mechanism such as illustrated as an embodiment of the invention will beduplicated in the opposite halves of the machine, and it is further tobe understood that in its more general aspects the invention is notlimited to machines of the twin type. e

The shoe a to which leveling or shaping pressure'is to be applied is4mounted upon a shoe support or jack comprising a heel post4 10 and a toepost 12 which are relatively adjustable as heretofore for shoes ofdifferent sizes, the jack as a whole being movable about an axis at 14to carry the slice forwardly and rearwardly beneath a 'leveling roll 16.The roll 16 is mounted in a holder 18'which is supported ou a rollcarrier 20 pivotally mounted at 22 on the frame of the machine forswinging movements in a` vertical plane to press the roll 16 upon theshoe and to relieve the pressure'at different respective times in theoperation of the inachine. To cause the roll to operate along the bottomof the shoe the jack is swung about its axis 14 by power-operatedmechanism comprising a path cam 24i on a cam shaft 26 and connectionswhich it is unnecessary to, describe in detail for an understanding 'ofthe present invention, such mechanism being fully disclosed in priorLetters .Patent including those hereinbefore referred to. Generallyspeaking, the cycle'of operations comprises first a Vmovement of thejack to cause Y the roll to traverse the shoe fromthe toe end to theheel-seat, then a plurality of backward and forward movements while theroll is operating 11i the shank, thereafter a movenient to cause theroll to return to the toe end of the shoe along one side and then to l`traverse the sole from the toe to the heel-seat along the.y oppositeside, followed by a plu- "rality of backward and forward movements tocause the roll to operate in the shank at that side, and finally amovement to cause the roll to return to the toe and toleave the shoe. Inthe course of these operations the roll is tipped in various ways bymovement of its holder 18 relatively to the carrier 2O by mechanismwhich is also disclosed in prior Letters Patent and need not bedescribed in detail for an understanding of this invention. 1

n the course of the cycle of operations the pressure of the roll 16 onthe shoe is controlled through a spring 28 by means including a Vcamwheel 30 fast on the cam shaft 2G. The spring 28 is arranged to applyvits pressure to a lever 32 which is pivoted at 34 on the frame of themachine and is yconnected by a link 36 to the roll carrier 20. For

controlling the 'spring 28 there is provided a lever arm 38 fast on a.rock-shaft 40 which has also fast thereon an arm 42 connected by a link44 to a lever 46 pivoted at 48 on the frame of the machine and providedvwith a roll 50 in engagement with the periphery of 'the cam wheel 80.The lever arm 38 is arranged to bear on ears 52 formed on opposite sidesof a sleeve member 54 which is slidingly movable in a holder 56 on theframe of Jthe machine and engages the upper end of the spring 28. Forpurposes of the presentinvention a rod 58 extends downwardly through thesleeve 54 in sliding engagement therewith and through the spring 28, thelower endV of the-rod 'having screw threads lthereon in engagement withco-operating threads in a memberGO which is seated on the lever 32 andservesas anabutment forthe lower end of the spring. Fast on the upper'end of the rod 58 is a hand-wheel 62 which abuts against one end .of:the sleeve member 54 and by which the rodmay be turned lto vary thedistance between the members 54 and 60 and thusto vary the degree ofkcompression of the spring 28;

.lt will thus be seen that the members 54 and60-and the threaded rod 58with its handwheel -62 constitute a `holder for the spring 28, and thatwhen the parts of the `holder are suitably Vadjusted and `the vlever arm38 is so far retracted as to release the ears 52 of the member-54,asillustrated in Fig. l, the spring and itsvholder are free to movevertically as a unit to release the lever-82 rand the roll carrier 2Ofrom 4the force of the spring, notwithstanding the fact that the springis still held under' compression. Accordingly, at each time 4in thecycle when relief of the ressure on the shoe takes place` for esample intraversing the balldine of the shoe, the spring 28'inay vbe renderedinoperative as far as its action on the roll-carrier is concerned, whilestill being held under a predetermined degree of compression so thatwhen'the pressurev is again applied to the shoe by the act-ion of thecani wheel '30 the shoe will immediately be subjected `to a pressurecor/responding to the stress ofthe spring. In this manner the pressuremaybe effectively relieved at the portion of the shoe desired, and yetthe shoe may be subjected to the amount of pressure required for thebest results immediately when the pressure is again applied. It willbeunderstood that each ofthe twin sets of operating instrumentalities willincludel a separate spring 28 and a holder therefor, as described,together with a separate operating arm 38 fast on a common rock-shaft 40operated by the single cam'ivheel 80 through the parts 42, 44and 46.

Preferably',although not necessarily, there will be combined Vwith thepressure relief mechanism above described a device `of the same general'character as that shown. and

d escribet in Letters Patent No. 1,667,76lv

hereinbefore mentionedfor supporting the weight of the roll carrier 20and the roll 16 with its holder I8, and it may be for also lifting theseparts at each time when the roll carrier is released from the force ofthe spring28. This device comprises a spring-controlled plunger 64 whichis mounted for vertical movement in a holder 66 on the frame vof themachine and is arranged to engagethe lower face of the front end of theroll carrier 20. 'lt will be. understood that the force with which theplunger 64 engages the carrier 20 may be adjusted by Apressure reliefmay thus be provided for.

roll passes from the shank up over the ballline of the shoe. i

ALs herembefore explained, the minimum stress of the spring 28 may beadjusted by .turning the handle-wheel 62 to vvary the pressureapplied tothe shoe, and there is further provided means for effecting acompensating adjustment of the lever arm 38 to position it in thedesired relation to the ears 52 on the member 54, in order to avoid, forexample, anundesirable amount of lost motion between the Varm and theears 52. For this purpose the link 44 comprises a rod having a handwheel68 thereon and provided at its opposite ends with rightand left-handthreads respectively for engagement `with corresponding threads inmembers 7 0 and 72 which are connected respectively to the arm 42 and tothe lever 46. By turning the rhand-wheel 68, therefore, theeffective'length ofthe link 44 may be varied to vary the relation of thearm 38 to the ears 52 and correspondingly to vary the limit of operativemovement of the arm 38 without adecting the extent or amplitude of itsmovement. Any desired relation between the arm 38 and the earsf52 at thetime of the it is not 'desired thatthe roll 16 be actually lifted out ofContact withthe shoe, the arm 38 may be so adjusted vas still to engagethe ears 52 even thoughk the spring 28 `is expanded to the limitdetermined by its holder, so that the arm 38 will co-operate with theplunger 64 in maintaining the roll barely in Contact with the shoewithout any suhstantialgpressure thereon. Furthermorey it will beevident that by suitable adjustment of the link 44 in co-operation withthe yadjufrtment of the hand-wheel 62 the parts may beso positionedthatthe roll carrier-20 will not beV entirely released from the forceAof Ithe spring 28 at the time when the relief of the pressure on theshoeoccurs, as may be desirable in operating upon some styles of shoesylt will likewisev be evidentthat adjustment of the link 44 will serve initself to vary more or less the pressure appliedto the shoe.

rlhe cam wheel 30 isso the pressure of the roll on the shoe inthe samegeneral relation to the cycle of relative j de aression 76 corres Ondineto the first re-.

PD i

lief of the pressure at lthe ball-line, a cam 78 for applying ypressurewhile operating at one formed as to controlv side of the shank, adepression 80 correspond- :ing to the relief of the pressure inreturning over the ball-line, a cam 82 for applying the pressure inoperating forwardly over the Vforepartv at one side and in returningalong the forepart at the other side, a depression 84 correspondingtothe-first relief of the Y pressure at the hall-line on that side, a cam86 for applying the pressure in operating in the shank at that side, adepression 88 correspending to relief of the pressure in returningvpressure takes place. It is especially desirable to determine preciselythe time of the Vpressure relief at the hallv of the shoe in accordancewith the style of shoe, in view of the varying shapesr of differentstyles of shoes including variations in the length of 'the forepart ascompared with that of the shank such as frequently occur in differentshoes of the saine size. Foil the purposes in .view the machinehereinshown includes in its organization means operative independentlyTof the cam wheel for determining' the time ofthe pressure relief at eachpart of the oyclewhere itoccurs, with provision for adj ustably vai-yinthe time of the pressure relief at the ball ofthe i shoe. By referenceto Fig. 1 it will be seen that there is mounted adjacent to one side ofthe cam wheel 30 a cam plate 94 which is formed on one end of an arm 96,the latter being pivotally supported at one end on an arm98 which ispivoted at100 on the frame of the machine, and Vpivotally supported atits other end on a member 102 which is mounted on a rock-shaft 104 onthe frame. It will thus be seen that swinging movement of thesupporting` members 98 and 102 the cam plate 94 may be one of the camson the cam wheel.

moved to the right and left (Figi. 1). The roll which is engaged by thecam wheel 30 is long enough to be engaged also hy the cam plat-e 94, sothat the cam plate may be moved into position under the roll to supportit in the position to which it is moved by any A spring plunger 106(Fig. 1) `is arranged to act on the arm 98 to move the cam plate 94 thusinto vposition under the roll, as illustrated for es:- ample in Fig. 5,each time that the roll is lifted by the cam wheel 30. When the camplate is thus positioned under the roll 50 it maintains the pressure ofthe leveling' roll v16 on the shoe independently of the cam wheel afterany one of the cams on t-he cam wheel has passed beyond the roll, and inthe construction shown the depressions between the cams of the cam wheelare of such length that each cam will have passed beyond the roll atleast by the time when it is necessary to relieve the pressure inoperating on any'size or style of shoe, the relief of the pressureoccurring at the time when vthe cam plate 94 is moved toward theleft(Fig. 1) to release the roll. For thus controlling the cam plate 94there is provided a series of power-driven cams 108, 110, 112, 114 and116V (Figs. 2, 3 and 4) corresponding to the depressions 76, 80, 84,88and 92 in the cam wheel 30. These cams are mounted to turn as a unitabout a shaft 118 and are driven from the cam shaft 26 by a chain 120 inengagement with a sprocket wheel 122 connected to the cams. r1`hesprocket wheel 122 is fast on the hub of a disk 124 which is keyed toahub V126 rotatahlymounted on the shaft 118 between co1- lars 128 and 130secured to the shaft. The disk 124 has mounted to turn'thereon a lug1.82 in whichV is swivelled a screw 134 in threaded engagement with alug 136 mounted t-o turn on a disk 138 rotatable about the hub 126 andon which the cam 108 is formed. At the other end of the series of camsthere is fast on the hub 126 a disk 140 similarly provided with a lug142 and a screw 144 in engagement with a lug 146 on a disk 148 rotatableabout the hub 126 and onwhich the cam 114 is formed. In the center thereis fast on the hub 126 a disk150 on which the cam 116 is formed, andmounted to turn about the hub at one side of this disk is a disk 152which carries the cam 110, and at the opposite side thereof a disk154which carries the cam 112. lThe disks 152 and 154 have elongated slots156 and 158 therein through 'which' extend from the central disk bolts160 and 162 i tion in relation to the roll 16. The different cams arearranged: to act in succession upon a roll 168 which is supportedbetween a pair of connected arms 170 mounted to turn on the rock-shaft104 and arrangedto engage a roll 172 onthe member 102l for operatingthis member to move'the cam plate 94 to the left (Fig. 1).

From the foregoing description it will be seen that there is providedmeans for controlling` independently of t-he cam wheel 30 It will thusbe seen the relief of the pressure of the leveling roll on the shoe eachtime that it occurs, and means for adj ustably varying the time of theLesson relief of pressure at each traverse of the roll over the ball ofthe shoe. The pressure is applied each. time bythe appropriate cam. onthe cam Wheel 30, and. in the construction shown the time of suchapplication of pres# j styles so that the pressure will not be, appliedtoo soon in operating on.v any style of shoe.' It

will beevident that since the mechanism disclosed thus provides forvariation in the time of the reliefof the pressure relatively tothetimeof'the application of pressure, it affords provision for a variationin the duration of the pressure relief at the4 ball portion of the shoe,whichl is desirable in accommodating the machine to produce the bestresults in operating on shoes-of different styles.

` Fig. 1 shows'the parts as positioned prior to the starting of themachine, the roll 50 resti i g in the depression92. of the cam Wheel andthe cam plate 9e being heldin a retracted position by means of the cam`116. lWhen the Ymachirvle is started the cam 74 first becomes effectiveto raise the roll Y and thereby presswthe leveling roll upon the shoeafter the jack has moved far enough to carry the end of the toe underythe roll. Atthe same n time the cam 116 moves-out from under the (j ilroll 168 and thereby releases vthe cam plate 94 to the action of theplunger-106, and as soon `as the Cam roll 50 has been raised to the topof thel cam le the ,cam plate 9e is moved by the plunger int-o positionto support the roll inderpendently of the cam 74 after this cam haspassed from under the roll, as illustrated, in Fig. 5. by the adjustmentof the cam 108 this cam becomes effective to move the cam plate 94 out Yfrom under the roll and thus permit the roll to drop into the depression76 of the cam Wheel SO to relieve the pressure on theshoe as the rollfirst traverses the ball-line, the cam 78 thereafter bec ming leflbctiveto apply the pressure in the shank. ln a similar mannersuccessive reliefof pressure and application of pressure are eected at the othersuccessive times in the cycle when the roll traversesthe ball-line, andat the end of the cycle relief of pressure as the roll passes olf thetoeV end of the shoe is controlled by the. cam 116. It Will beunderstood that each time when the relief ofV the pressure taires placethev shoe may be either entirely released from the pressureor may besubjected only. to a lesserdegreeof presupon the adjustment of thepressure spring 28 'and the controlling mech-'anisinassoeiatedtherewith, as hereinbefore-l explained.

Y' v'lliile the invention is illustratedwith partien ar refere ee totlie'leveling of the out- 'At the time in the cycle determined soles ofshoes, `it Will-,bek understood that machines of the ktype herein shownare not. l,

restricted to that particular use, but are: ap` plicable, for example,to the pressing off the4 inseanis of Welt shoes before the, outsolesareapplied, andl accordingly theterma leveling isherein. employechnot y Wayof'1'imitation,.

but in an inclusive sense to compr-chendtheV various uses for whichmachines ofthis type, are adapted. i j

Having described the invention, What I4 claim. asvneiv and desire tosecureby Letters Patent of the United Statesfis 1- n 1. In a machine ofthe class describedia` shoe support and a leveling tool relativelymovable to cause the toolf'to operatealong-tlie bottom of a shoe, acarrier supportingsai'd tool and movable heightwise lof the shoe to,vpress the tool upon the shoe and to relieve the pressure, and meansincludingfra spring for controllingsaid'carri'er to. apply and re1-vlieve the pressure, said means being constructed to releaselthercarrler-from the force` of the spring at a predetermined time! inthe, operation of the machine on the shoe while yet maintaining thespring under aprede termined degree of stress. j.

2. In a machine of the` class described, a shoe support anda levelingtoolV relatively movable to cause the tool tooperate along the bottomrof a shoe, a. carrier supporting said tool and movable ,heightvvise oftheshoe tov press the tool upon, the shoe and to relieve the pressure,and` mechanism including a 'spring for op'eratingjsaid carrier to pressthev tool onk the shoe and for controlling the pressure Vin the courseof the leveling operatiomsaid, mechanism being constructed to releasethe carrier from the force of the spring at that time in the. cycle ofoperationsof the machine. when the tool is traversing the ball-line ofthe shoe While yet maintaining the spring under a predetermined stress.

3. In a machine ofthe class described, a shoersupport anda leveling toolrelatively movable to cause the tool to operate along the bottom of ashoe, a carrier supportingsaid tool and movable heightvvise ofthe shoetov press the tool upon the shoe and to relieve the pressure, and`cam-.controlled mechanism in* cluding a spring forv controlling saidcarrier to apply the pressure yieldingly to the shoe and-to reliev-ethepressure aty that time in thel cycle of operations of the machinewhen the', tool is traversing the ball-line'of the shoe, said mechanismincluding-'also a devi-ce Vfor controlling the spring so constructed asto release the carrier completely from the force of the sprinO` Whileyet maintaining the-spring under ystress when the pressure isthus`relieved. y

' ln ia machine of .the class described, al shoe support anda. levelingtool relatively movable to cause thetool to operate along the"v bottomof a shoe,` a carrier supporting saidl ieu ` and movable heightwise ofthe shoe to pressV the'tool upon the shoe, and cam-con- ."ofltimes inthe cycle of operations of the mato'pressthe tool upon the shoe, aspringl Y tool and movable heightwise of the shoe to` Which to operatesaid carrier to press the tool chineWhileyetmaintaining the spring understress. i 5. In a machine of the class described, a shoe support and aleveling tool relatively movable to` cause the tool to operate alongthe' bottomV of a shoe, a carrier supporting Y said tool and movableheightwise of theshoe through 'which to operate said carrier toV pressthevtool on the shoe, a device for controlling said spring as a Whole tomaintain it under stress at all times in the operation of the machine,and mechanism arranged to act through said controlling device to applythe force of the spring to said carrier in operat- `ing von the shoe andat a predetermined time in theV cycle of operations of the' machine torelease the/carrier from the force of thev spring While the springremains under stress.

`6. Ina machine of the class described` a shoe support and a levelingtool relatively movable to cause the tool to operate along the bottom ofa shoe, a carrier supporting said tool and movable heightwise of theshoe to press the tool upon the shoe, a spring throughk 4Which tooperate said carrier yto press the tool on the shoe', a' device forcontrolling said spring as a Wholeto limit it to a predetermined"minimum stress, and mechanism arranged to act through saidcontrol-vling' device to apply to the tool carrier thev force of the spring thusdetermined and to increase said force in operating on the shoe and at apredetermined time in the cycle of'- operations of the machine torelease said carrier from the ,force of the spring While the springremains under stress. v

"7., In a machine ofthe class described, a vshoe support and a levelingltool relatively movable to cause the `tool to operate along` the bot-tomof a shoe, a'carrier supporting said press the toolV upon the shoe, aspringthrough on'V theV shoe, andv automatic mechanismV for controllingsaid spring to relieve the pressure of the tool onthe shoeat apredetermined time in the operation of the machine' and i thereafteragain to apply the pressure, said `mechanism being constructed torelease the' carrier from the force of the spring to Veffect suchreliefof the pressure While yet main-4'4 y taining the spring under apredetermined dei againapplied.

gre.. efective on' the 'shoe' When the pressure-1s of stressto berendered immediately 8. In a machine of the class described, a shoesupport and a leveling tool relatively movable to cause the tool tooperate along the bottom of a shoe, said tool being movable heightwiseof the shoe to apply pressure to the shoe, a member for operating saidtool to press it on the shoe, another member movable Y sponse to theretracting lmovementof said movable member While yet maintaining thespring under a predetermined degree of stress.

' 9. In a machine of the class described, a shoe su'pport'and a levelingtool relatively movable'to cause the tool to operate along the bottom ofa shoe, a carrier supporting said tool and movable heightWise of theshoe to press the tool upon the shoe, a spring through which to operatesaid carrier to press the tool on the shoe, a holder for said springconstructed to engage the spring at both ends to hold vit undercompression and prevent it from completely expandingin the operation ofthe machine, and a member movable in the operation of the machine toapply the force ofthe spring to the carrier through said holder andalsomovable to release the holder,"

the spring and its holder being mounted for movement as a unit When thusreleased to free the tool Vcarrier from the force of the spring vvhilethe spring is still held under compression. i

' 10. In a machine of the class described,` a

shoe support anda leveling tool relatively I respectively, a springinterposed between saidv members, and a holder for said springconstructed to maintain it under compression irrespective ofthe extentof therelative separating movement of said members, said spring anditsholder being so mounted as to release the tool from the force of thespring in response to the relative separating movement of said membersWhile maintainingthe spring under compression.

.11. Ina machine of the class described, a shoe support and: a levelingtool relatively movable to cause lthe tool toloperate along the bottomof a shoe,a carriersupporting said .tool and movable heightwise of theshoe Vto Vpress the tool upon the shoe and to relievey the pressure,means including a spring for controlling'said'carrler to apply andrelievethe Ilo the bottom of a shoe, a carrier supporting said s tooland movable heightwiseV of thev slice to press the tool uponl the shoeand to relieve the pressure, a member movableto operatev said carrier toapply the pressure and retractable to relieve the pressure, a springi'oi applying theforce of said' member to theV carrier, and a holderfory said spring constructed and arranged to release the carrier fromthe'force of thespring in response to the retracting movement of' saidmember While maintaining the spring under a predetermined degree otminimum compression,

said holder beingadjustable to vary the de-V gree of minimum compressionof the spring. 13. In a machine of trie class described, a shoe support,and a leveling tool relatively movable to cause the tool to operatealong the bottom of a shoe, a carrier supporting said tool and movableheightvvise oiV theshoe to press the tooll upon the shoe and to relievethe pressure, a spring through Which to operate said carrier to applythe pressure to the shoe, a holder for said spring comprising membersarranged to engage the spring at its opposite ends to prevent it fromcompletely expanding in the operation of thev machine, and a leverarranged to operate on one of the members of said holder to apply thepressure of' the spring to the Carrier and retract-able to release theholder at a predetermined time in the operation of the machine on theshoe, said spring and its holder being mounted for movement as a unitWhen the holder is thus released by'said lever to release the carrierrfrom the 'torce ofthe spring and the members of the holder beingrelatively adjustable to vary the compression under which the' spring isheld when theholder isthus released.

14:. ln a machine of the class described.` a shoe support and a levelingtool relatively movable to cause the tool tooperat'e along the bottom ofa shoe, a carrier supporting' said tool and movable heightwise or" theshoe to press the tool upon the shoe andto relieve .the pressure', aspring through Which to operate said carrier to apply the .pressuretothe shoe, a holder for said spring comprising` members for engagingthe spring at its opposite ends to preventit from completely expendingin thev operation of the machine, a lever arranged-to operate onone-oi*l said members to apply the pressure of the spring to the carrierand movable in a direction away from said member to release theholderat' a distance between the lever land the member on which itoperates, and means orseffect-v ing a compensating adjustment of saidlever.,

ljln a machine of the class described, a shoe support and a levelingtool'relatively movable to cause the tool to operate alongthe bottom or"a shoe, a carrier supporting said tool andfmovable heightwise of theshoe to press thevto'ol upon the shoe and to relieve` the pressure, aspring through which to operate said carrier to apply the'pressure tothe shoe, 'a holder for said spring comprising members for engaging thespring'atits opposite ends toprevent it from completely expending in theoperation of the'machine, a lever arranged to operate on one olsaidmembers toappl'ythe pressure of the springto the carrier and movablein a direction away from said member to release the holder 'at a`predetermined time in the operation of the machine on the shoe, saidspring andi its holder being so mounted as to release the carrier fromthe force of the spring when the holder is 'thus released bythe lever,means'ior relativelyA adjusting said members to vary-the compression ofthe spring andto vary the distancebetiveen the lever and the member onwhich it operates, a link for operating said lever, vand means forvaryingthe length of said' link to adjust the lever relatively to theholder.

lo. In a machine of the class described, a shoe support and a levelingtool relatively movable to cause the tool to operate along the bottom ofa. shoe, acarrier supporting said tool and movable heightwise of; theshoe to press the toolupon` the shoe and to relieve the pressure, aspring through which to operate sain carrierto applythe pressure to theshoe, a member arranged to operate on said' spring, and'means torimparting vto said member an operative movement of predetermined extent,said member being adjustj able to vary the limitof its operative'movemovable to cause thetool to operate along ifio the bottom ot a shoe,a carrier supporting4 y,

said tool and'movableheiglitwise 0I" the shoe to press the tool upon thesho-e and torelieve` the pressure, a spring through which to operatesaid carrier to'apply the pressureto the shoe, ajlever arrangedvtooperate on said spring, means including a link for impart? ing tosaid'lever an operative movement oit4 predeterrfuned extent, and Vmeansfor varying the length Yof said link to vary the limit of theoperativevmovement of the leveravithout varying the extent of itsmovement.

18. In a machine of the class described, a

shoe support and leveling tool relatively mov-y trolling said carrier toapply and relieve the pressure, said means being constructed to replease the lcarrier from the force ci' the. spring at a predeterminedtime in the operation of the machine on a shoe While, yet maintainingAthe springunder a predetermined degree oi" stress and being also`adjustable to preventV such release in operating on a shoe. y

19. In a machine of the class described, a shoe support and a levelingtool relatively movable Vto cause the tool to operate along the bottomof a shoe, a carrier supporting said tool and movable heightwise ot theshoe to press the tool upon the shoe andV to relieve the pressure, andautomatically operative mechanism including a spring for operating saidcarrier to press the tool on the shoe and for controlling the pressurein the course of the leveling operation, said mechanism beingconstructed to:release the carrier 'from the force of the spring at thattime in the cycle ofy operations of the machine When the tool is.traversing the ball-line of a shoe While yet maintaining the springunder a predeter- '.mined stress and being also adjustable -to preventsuch release in operating on a shoe.

20, In a machine of the class described, a shoe support anda levelingtool relatively movable to cause the tool to operate along the bottom ofa shoe, a: carrier supporting sai-d tool and movable heightvvise of theshoe to press the tool upon the shoe and to relieve the pressure, anoperating member movable to operate said carrier tov apply the pressureand lalso movable at a predetermined tirnein the operation of themachineon the shoe to relieve the pressure, a spring for applyingtheorceof said voperating member to the carrier, and a. holder for saidspring constructed and arranged to release the carrier from the force ofthe spring in response to the pressure-relieving movement of theoperating member While yet maintaining the spring un der compression,said operating member and holder being relatively adjustable at the Willofthe operator to prevent the release of the carrier from the force ofthe spring in operating on ashoe. f

. 2l. In a machine of the class described, a shoe .support and aleveling tool relatively Y Vmovable to cause the tool to operate alongthe Yet bottom of a shoe, a. carrier supporting saidv tool' and movableheightwiseofthe shoe yto y press the tool upon the shoe andvto relievethe pressure, meanslncludinga spring for co ntrolling said carrier toapply and relieve the' pressure, said means being constructed to releasethe carrier from the force or the spring at a predetermined time in theoperation of the machine on the shoe While maintaining to apply andrelieve the pressure,said mechanism being constructed to release the`car-A rier from the force of the spring 'at that timel in the cycle ofoperations of the machine when thetool is traversing the ball-line oftheshoe While yet maintaining the spring under stress,l and means forlifting the carrier when itis thus released from the forceof the spring.

23. In machine of `the classdescribed, a

shoe support and a leveling tool relatively movable to cause the tool tooperate along the bot-tom ot a shoe, a carrier supporting s said tooland movable heightwisev of the ,shoe to press the tool upon-the shoe andto relieve the pressure, yieldable means tending` constantly to movesaid carrier in afdirection to liftv the Atool romrthe shoe, andautomatic means including a spring forcontrolling said carrier to-applyand relieve the pressure of the tool on the shoe at dilferent respectivetimes in the operation'of the machine, said last-named means beingconstructed to release the carrier from the force ot the spring at apredetermined time in the cyc'le of operations to ypermit the tool to belifted by sai-d yield-v able means vvhile yet maintaining Vthe springunder a. predetermined degree of stress.

24T. In a machine of the class described, a shoe support and a levelingtool relatively movable to cause the tool to operate along the bottom ota shoe, a carrier supportingsaid tool and movable heightvvisefof theshoe to press the tool upon thevshoe and to relieve the pressure, aspring plunger tending constantly to lift .the carrier andthe tool, andautomatic mechanism vincluding a spring arranged to operate on thecarrier against the resistance of said. plunger topresst-he tool on theshoe, saidrmechanism being'constructed to release the carrier from theJforce of the spring While still maintaining the springv under stress atthat time inthe cycle of operationsV When the tool is traversing theballline ot the sho'eto permitfthe tool to be lifted by the plunger. v cj 1 'y 25. Inamachine of the class described, a shoe support and aylevelingtoolrelatively movable to' cause the tool'to operate along' thebottom of a shoe, means for thus relario i tively moving the shoesupport and the tool in a predetermined cycle oi" operations of themachine, and automatic means for relieving the pressure ot the tool onthe shoe at a predetermined time in the cycle of operations, saidlast-named means being adjustablevto vary the time when the pressure isthus relieved.

26. In a machine oi the class described, a shoe support and a levelingtool relatively movable to cause the tool to operate along the bottom`of a shoe, means ior thus relatively moving the shoe support and thetool in a predetermined cycle or' operations of the machine, andautomatic means comprising a cam for relieving the pressure of the toolon the shoe at a predetermined time in the cycle oi' operations, saidcam being adjustable to vary the time When the pressure is thusrelieved.

27. In a machineof the class described, a shoe support and a levelingtool rela-tively movable to cause the tool to operate along` the bottomof a shoe, means for thus relatively moving the shoe support and thetool in a predetermined cycle oi'operations oit the machine, automaticmeans for pressing the tool on the shoe, and additional means torrelieving the pressure at a predetermined tin e -in the cycle ofoperations, said additional means being adjustable to vary the time whenthe pressure is thus relieved.`

28. In a machine of the classdescribed, a shoe support and a levelingtool relatively movable to Vcause the tool to operate along the bottomof a shoe, means for thus relatively moving the shoe ,support and thetool in predetermined cycle oi operations or" the mach-ine, automaticmeans including a cam for pressing the tool on the shoe, and another camautomatically operative ,independently oi said I'irst cam to relieve thepressure at a predetermined time in the cycle of operations, n

said other cam being adjustable to vary the time .when the pressure isthus relieved. y

29.111 a machine of the class described, a

shoe support and a levelingtool relatively y movable to cause the tooltio Voperate along the bottom of a shoe, means for thus relativelymoving the shoe support and the tool in a predetermined cycle ofoperations ot the machine, and automatic means for pressing thetool onthe shoe and for relieving the pressure at different respect-ive timesin the cycle of operations of the machine, said automatic means beingadjustable to vary the time when I y the pressure is relievedindependently of the time when it is applied.

30. In a machine of the class described, a

shoe support and a leveling tool relatively movable to cause the tool tooperate along the bottom of a shoe, means for thus 'relatively movingthe shoe support and the tool in a predetermined cycle of operations ofthe machine, and automatic means for pressing the laired. .Y

32; In a machine of the class described, a

tool on the shoe, Vfor relieving the pressure, and for thereafter-againapplying thepreS-` sure yin the cycle of .operations of the machine,said automatic means being adjust-able to vary the duration of thepressure relief. i 3l. In a machine of the class described, a shoesupport and a leveling tool relativelymovable` to cause the tool tooperate along the bottom ci a shoe, vmeans for thus relatively moving`the shoe support and the tool in a predetermined cycle of operations ofthe machine, a spring Ji'or pressing said tool yieldingly on thev shoe,and automaticmeans for increasing and relaxing the force lof said'spring at different respective times in the cycle otoperationsof themachine, said last'- named meansbeing adjustableto vary the time Whenthe itorce of the spring'is thus reshoe'support and a leveling toolrelatively movable to cause the tool to operate 'along' the bottom of ashoe, means `for thus relatively moving the shoesupport and the tool in`a predeterminedcycle of operations of the inachine, a spring forpressing said tool yieldinglyy on the shoe, a cam for increasing thestress of said spring at a predetermined time in the cycle of operationsof the machine, and means operative independently of said cam to relievethe stress of the spring at another time in the cycle. v n

33, ln a machine of the class described, a shoe supportand a leveling"tool relatively movable to cause the tool tooperate along the bottom ofa shoe, means for thus relatively moving the shoe support and the toolin a pre.- determined cycle ofv operations of the machine, a spring forpressing said tool yieldingly on the shoe, a cam forgincre'asing thestress ofv said spring at a predetermined time in the cycleof'operations of the machine, and means operative independently of :saidcainto relieve the stress of thespring at another time in the cycle,said. last-named means being adjustable to varythe time when the stressof the spring is thusrelieved. y v

34.-. ln a machine `of the class' described, a V shoe support 'and'aleveling tool relatively Vmovable to cause the-'tool to'operate alongthe bottom of a shoe,rmeans for thus relatively movingthe shoe supportand the tool in al predetermined cycle of operations ofthe machine, alspring for pressing said tool yieldingly on the shoe, a cam forincreasing the tively moving the shoe support and the tool inapredetermined cycle of operations of the machine, automatic meanscomprising a cam anda member engaged and moved by' said cam to press thetool on the shoe, and additional automatic means for yholding saidmember in the position to which it is moved j by the cam and forreleasing it independently of the cam ata predetermined time in 'thecycle of operations.

36. In a machine oi the class described, a

shoe support and a leveling tool relatively fmovable to cause the tooltooperate along the bottom of a' shoe, meansfor thus relatively moving theshoe support and the tool in a c predetermined cycle of operations ofthe ma- .l cam to press the tool on the shoe, a control-` chine,automatic means comprising a cam and a member engaged and moved by saidlingv device for holding said membervin the position to which it ismoved by the cam, and an adjustable cam for operating the controllingdevice'to release said member and thereby to relieve the pressure 01"'the tool'on the Y'shoe at a variably predetermined time in the cycle ofoperations ot the machine.

, k37.V Inl a machine of the class described, a slice support and aleveling tool relatively v movable' to cause kthe tool to operate along`the bottom of a shoe, means for thus relativelymoving the shoe supportand the tool 'in ja predetermined cycle of operations of the machine tocause the tool to traverse the ballline of the shoe'at .diiferentsuccessive times in the cycle, and automatic means for relieving thepressure of thertool on the shoe each time v that the tool traverses'theball-line, said lastnamedV means being adjustable to vary the time inthe-cycle of operations at Which each relief of the pressure takesplace. Y Y 38.'In a machine ofthe class described, a

' `shoes'upport and a leveling tool relatively movable to cause the toolto operate along the bottom of a shoe, ymeans for thus relatively movingthe shoe support and the tool in a predetermined cycle of operations ofthe ma- Y, chine to cause the tool to traverse the ball-line Y of theshoe at different successive times inthe cycle, andautomatic meanscomprising a pluralityof 'cams for relieving the pressure .of

the tool on the shoe e'achtime that the tool` traverses theball-line,each of said cams being adj ust'ableY independently of the others tovarythetime in the cycle of operations at vv'vhich the relief ofpressure controlled therebytakes place.'

39: Ina machine of the classdescribed,

i shoe support` and a' leveling tool relatively1 time relation to thedifferent vmovable to cause the tool to operate along the Vbottom of ashoe, means for thus relatively moving the shoe support and the tool ina predetermined cycleof Hoperations of the lmachine, a plurality of camsfor pressing the tool onthe shoe at different times inthe cycle ofoperations, and mechanism operative independently of said cams'torelieve the pressure of the tool on the shoe in .predetermined time.relation to the different applications of the pressure, said mechanismbeing adjustable to vary the times in the cycle at Which differentreliefs of the pressure takey place.

41. In a machine ofthe class described, a

shoe support and a. leveling tool`relatively` movable to cause the toolto operate along 'the bottom of a shoe, means for thus relatively movingthe shoe support andl fthe toolr in a predetermined cycle of operationsof the machine, a plurality of cams for pressing 'the tool on the shoeat different times in the cycle of operations, and automatic mechanism1ncluding a device common to the several cams for controllingindependently of said cams the relief of pressure of the tool on theshoe after the pressure has been applied bythe ac- K tion of each cam.

42. In a machine of the class described, a shoe support and a levelingtool relatively movable to cause the tool to operate along the Ybottomof a shoe, means for thus relatively moving the shoe support and thetool in aprei determined cycle of operations ot the'machine, a pluralityof cams for pressing the l tool on the yshoe-at diierent times in thecycle of operations, a member common to the several camsfor'controllingfthe relief of the pressure oi' the tool on the shoeafter the pressure has been applied lby, each cam, and ani:- iliary cammechanism for controlling saidk member ,to determine the times in thecycle when the relief of the pressure takes place. fr

In testimony -WhereofIhave signed'my name to this specification. 1

ERAsTUs npWrNKiiEv.

